Construction Technology of Soil Nailing Wall Support for Soft Rock Slopes in Expressway Engineering
Aiming at the problem of poor stability of soft rock slope in expressway engineering,the research on soft rock slope supporting construction technology is carried out.Soil nailing wall supporting structure is used as the main supporting measure to improve the stability of slope.In the aspect of concrete construction,the prepara-tion work of slope support construction is carried out first,including the operation of hole setting.Then,according to the construction rules,soil nails are made and grouting operation is carried out to increase the traction force and friction between soil nails and soft rock slope.Finally,concrete spray construction is carried out to further strengthen the slope,and maintenance work is carried out to ensure its stability and durability.The technique is applied to the soft rock slope support of a highway project,and it is verified that the stability coefficients of each position of the slope meet the requirements under natural conditions and rainfall conditions.
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